682 



A Sixth Memoir on the Law of Storms in India. [No. 127. 



5 th August. 



H. 



M. 





Barometer. 



H. M. 





Barometer. 



H. M. 



Barometer. 



45 a. 



M. 



28.30 



6 45 A. M 





29.12 



1 A. M. 



29.47 



1 



20 „ 



(lowest) 28.05 



7 45 „ 





29.20 



2 30 p. m. 



29.28 



1 



25 „ 





28.08 



8 15 „ 





29.21 



5 „ 



29.20 



1 



45 „ 





28.20 



8 45 ., 





29.23 



7 20 „ 



29.12 



1 



55 „ 





28.30 



9 30 „ 





29.27 



9 „ 



29.08 



2 



o„ 





28.37 



10 25 „ 





29.30 



10 20 „ 



28.95 



2 



25 „ 





28.56 



11 „ 





29.34 



10 45 „ 



28.90 



2 



45 „ 





28.68 



2 „ 





29.42 



11 5 „ 



28.85 



3 



10 „ 





28.75 



and continuec 



rising to 



11 30 ,, 



28.75 



3 



40 „ 





28.83 



29.65, at which point it 



11 53 „ 



28.65 



4 



10 „ 





28.90 



usually stands 



during fine 



6th August. 



4 



45 „ 





28.97 



weather."— 



-Canton Regis- 



15 A. M. 



28.50 



5 



10 „ 





29.02 



ter, August 



15. 





30 „ 



28.40 



6 



o„ 





29.08 









This table affords in itself good evidence of the passage of the centre 

 of the vortex near to Macao. 



At Canton (60 miles North of Macao,) the tyfoon began on the evening 

 of the 5th, after three or four days of very hot weather, with Northerly 

 winds, and continued throughout the night and the next day. Its violence 

 was greatest about 2 o'clock on the morning of the 6th. The following 

 is an account of the state of the Barometer and Winds at Canton. 



This relates to " fine weather" of the S. W. monsoon ; the mean of the 

 Barometer for July and August being at Canton 0.40 inch lower than for 

 December and January in the N, E. monsoon. This Barometer at Macao 

 appears to stand about 0.15 or 0.20 inch lower in its adjustment than 

 that used at Canton for the reports in the Canton Register, the mean of 

 which for five years is 30.027. Many if not most of the common ship 

 Barometers stand too low in their adjustment. 



4th August. 



Barometer 29.79 N. W. fine weather. 



„ 20.70 N. by W. moderate breeze. 



y a. m. 



4 P. M. 



y a. m. 



4 P. M. 

 12 P. M. 



5 A. M. 



9 A. M. 



I 1 A. M. 

 5 P. M. 



II P. M. 



5th August. 



29.62 Wind N. and N. W., fair weather. 

 29.54 „ unsettled rain and fresh breeze. 

 29.37 „ N. blowing hard and in heavy gusts. 



6th August. 



29.34 Wind N. E. blowing hard with heavy rain. 



29.51 „ S. E. 



29.58 ,, blowing hard, moderating. 



29.70 „ S. E. 



29.85 „ S. E. 



